Construction of a Spacetime Magnetic Hopfion

Spacetime magnetic hopfions from internal excitations and braiding of skyrmions

  • Ross Knapman
  • Timon Tausendpfund
  • Karin Everschor-Sitte
Article

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  • Enhancing deformation of soft microparticles such as cells, capsules and vesicles has widespread applications in cell phenotyping, drug/gene delivery and smart material synthesis. Here, the authors demonstrate that enclosing a capsule into a droplet can amplify the capsule deformation parameter by up to two orders of magnitude, compared with an isolated capsule experiencing identical channel flow conditions.

    • Dalei Jing
    • Ruixin Lu
    • Yi Sui
    ArticleOpen Access
  • Asteroid tracking has been demonstrated as a promising and prominent probe of fifth forces arising in several well-motivated models beyond the Standard Model of particle physics. The authors use the state-of-art tracking data for the asteroid Bennu from the OSIRIS-REx mission to derive the tightest limits on fifth forces and ultralight dark matter at the lengths of solar-system objects.

    • Yu-Dai Tsai
    • Davide Farnocchia
    • Luca Visinelli
    ArticleOpen Access
  • The authors introduce a network growth and adoption model with preferential attachment and asymmetric mixing that can explain the inequalities observed in the group growth dynamics in scientific citation and collaboration. This model can be used to investigate the effect of intervention in group mixing preferences to overcome cumulative disparities.

    • Jun Sun
    • Fariba Karimi
    ArticleOpen Access
  • Engineering sizeable spin-orbit coupling (SOC) in graphene generates effects unmatched in traditional low-dimensional systems. Here, the authors show that the periodic modulation of SOC in 1D patterned graphene heterostructures leads to unusual mini-band structures with symmetry-protected Dirac cones featuring enhanced spin Berry curvature, which paves the way to tunable spin Hall responses.

    • L. M. Martelo
    • Aires Ferreira
    ArticleOpen Access
  • In quantum networks, entanglement purification is required to ensure that the E2E fidelity of the entanglement connections can support quantum applications reliably. Here, the authors explore the purification resource scheduling problem from a network-level perspective by jointly optimizing purification and resource allocation processes to maximize the throughput under the fidelity requirement.

    • Zirui Xiao
    • Jian Li
    • Jun Lu
    ArticleOpen Access
  • This work concerns a systematic study of Fe1-xO employing complementary methods of powder and single-crystal X-ray diffraction and synchrotron Mössbauer source spectroscopy up to 94 GPa and 1700 K. It presents a structural and magnetic transitional pressure-temperature diagram of Fe1-xO and demonstrates the complex physicochemical properties of simple Fe1-xO binary oxide under extreme conditions.

    • Xiang Li
    • Elena Bykova
    • Ilya Kupenko
    ArticleOpen Access
  • Droplet dynamics on lubricated surfaces differ fundamentally from those on dry surfaces due to the formation of a wetting ridge around the droplet. By combining confocal microscopy and lattice Boltzmann simulations, the authors elucidate how the wetting ridge geometry evolves with speed and create heatmaps to reveal where energy is dissipated during motion.

    • Abhinav Naga
    • Michael Rennick
    • Halim Kusumaatmaja
    ArticleOpen Access
  • The evolution of X-ray transient absorption signal in studies of ultrafast molecular dynamics is controlled by the shapes of potential energy surfaces of the associated core-excited states. The authors use experiment and theory to measure the slopes of potential energy surfaces for excitations out of the C 1s and Cl 2p shells to valence antibonding orbitals in CCl4

    • Andrew D. Ross
    • Diptarka Hait
    • Stephen R. Leone
    ArticleOpen Access
  • Silicon photonics can be used to create high-speed large-scale neuromorphic systems for artificial intelligent tasks. Here, the authors discuss the design details and behavior of a resonator spiking neuron that can be fabricated in a commercial silicon photonics foundry process.

    • Marcus Tamura
    • Hugh Morison
    • Bhavin J. Shastri
    ArticleOpen Access

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